CN207317579U - Heat exchange pipe mechanism in blast furnace gas heat exchange device - Google Patents
Heat exchange pipe mechanism in blast furnace gas heat exchange device Download PDFInfo
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- CN207317579U CN207317579U CN201721280258.7U CN201721280258U CN207317579U CN 207317579 U CN207317579 U CN 207317579U CN 201721280258 U CN201721280258 U CN 201721280258U CN 207317579 U CN207317579 U CN 207317579U
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Abstract
The utility model discloses the heat exchange pipe mechanism in a kind of blast furnace gas heat exchange device, including：First group of heat-exchanging tube bundle and second group of heat-exchanging tube bundle, first group of heat-exchanging tube bundle and second group of U-shaped arrangement of heat-exchanging tube bundle, the both ends of first group of heat-exchanging tube bundle are the first gas inlet end and the first gas exit end respectively, the both ends of second group of heat-exchanging tube bundle are the second gas inlet end and the second gas exit end respectively, first gas exit end is connected by turning flue with the second gas inlet end, blast furnace gas enters first group of heat-exchanging tube bundle by the first gas inlet end, then entered to from the first gas exit end in turning flue, blast furnace gas in turning flue is entered in second group of heat-exchanging tube bundle from the second gas inlet end, discharged again from the second gas exit end afterwards.The utility model increases the heated length of blast furnace gas significantly so that the heating effect of blast furnace gas greatly improves, so as to carry out abundant guarantee for the power generation by waste combustion in later stage.
Description
Technical field
It the utility model is related to blast furnace gas heat exchange device technical field.
Background technology
Steel mill has some processes flow to produce the byproducts such as blast furnace gas, and the exhaust gas volumn of blast furnace gas is big, and calorific value is low, needs
It is re-fed into after certain temperature is heated in blast furnace gas heat exchange device to gas furnace power generation by waste combustion.Current blast furnace gas heat exchange
There are following defect for device：First, heat exchanger tube length is limited, so as to cause blast furnace gas heating effect poor.2nd, the flue gas of blast furnace gas
Amount is big, and carries dust particles, and not only input end is produced and is washed away, but also very easily disorderly in the input end generation of heat exchanger tube
Stream, so as to increase resistance of the coal gas in heat exchanger tube.
Utility model content
The utility model technical issues that need to address are：A kind of heating effect that can effectively improve blast furnace gas is provided,
And heat exchanger tube of the blast furnace gas in heat exchanger tube in the blast furnace gas heat exchange device of resistance can be effectively reduced.
To solve the above problems, the technical solution adopted in the utility model is：Heat exchanger tube machine in blast furnace gas heat exchange device
Structure, including：Heat-exchanging tube bundle, the heat-exchanging tube bundle include arranged in parallel two groups --- first group of heat-exchanging tube bundle and second
Group heat-exchanging tube bundle, first group of heat-exchanging tube bundle and second group of U-shaped arrangement of heat-exchanging tube bundle, the both ends difference of first group of heat-exchanging tube bundle
It is the first gas inlet end and the first gas exit end, the both ends of second group of heat-exchanging tube bundle are the second gas inlet end and respectively
Two gas exit ends, the first gas exit end are connected by turning flue with the second gas inlet end, and blast furnace gas is by first
Gas inlet end enters first group of heat-exchanging tube bundle, is then entered to from the first gas exit end in turning flue, in turning flue
Blast furnace gas entered to from the second gas inlet end in second group of heat-exchanging tube bundle, afterwards again from the second gas exit end discharge.
Further, the heat exchange pipe mechanism in foregoing blast furnace gas heat exchange device, wherein, the first gas inlet end and
Be mounted on introducing pipe on the mouth of pipe of the every heat exchanger tube at two gas inlet ends, it is each introduce pipe by it is outer and in port be respectively
Outer intake and interior intake, each internal diameter for introducing pipe are directed inwardly into mouth by outer intake and are gradually reduced until and heat exchange tube
Mouthful outside diameter it is consistent, tube wall between outer intake and interior intake is in projecting inward so as to guiding from outside to inside to pipe is introduced
Cambered surface.
Further, the heat exchange pipe mechanism in foregoing blast furnace gas heat exchange device, wherein, the first gas exit end and
It is mounted on the fairlead of cone cylinder shape shape on the mouth of pipe of the every heat exchanger tube at two gas exit ends, each fairlead is by inner and outer
Port is respectively that interior outlet and outer outlet, the internal diameter of each fairlead gradually increase by the outside outlet of interior outlet,
The interior outlet of fairlead is identical with the outside diameter of the heat exchanger tube mouth of pipe.
Further, the heat exchange pipe mechanism in foregoing blast furnace gas heat exchange device, wherein, each outer introducing for introducing pipe
The bore of mouth is 1.5~2 times of interior intake bore.
Further, the heat exchange pipe mechanism in foregoing blast furnace gas heat exchange device, wherein, the outer extraction of each fairlead
The bore of mouth is 1.5~2 times of interior outlet bore.
Further, the heat exchange pipe mechanism in foregoing blast furnace gas heat exchange device, wherein, every of every group of heat-exchanging tube bundle
The mouth of pipe at heat exchanger tube both ends welds after stretching out the outer 10~12mm of tube sheet with fairlead or introducing pipe.
The utility model has the advantages that：First, the U-shaped arrangement of heat-exchanging tube bundle, this is compact-sized, and required space is small, and
The heated length of blast furnace gas is increased significantly, and the heating effect of blast furnace gas greatly improves, so that the power generation by waste combustion for the later stage
Carry out abundant guarantee.2nd, the mouth of pipe of the heat exchanger tube at the first gas inlet end and the second gas inlet end is respectively mounted introducing pipe, its
Good guiding function can be played to blast furnace gas, blast furnace gas is greatly reduced into the resistance in heat exchanger tube, so as to effective
Reduce generation turbulent in heat exchanger tube；Meanwhile it is each introduce pipe can also highly desirable avoid the weld bonds of exchanger tubes and tubesheets by
To washing away for the blast furnace gas with dust particles, so as to substantially increase the security of blast furnace gas heat exchange device operation.3rd,
The mouth of pipe of the every heat exchanger tube at one gas exit end and the second gas exit end is respectively provided with fairlead, and which greatly enhances blast furnace
Smooth degree when coal gas is discharged from heat exchanger tube, so as to effectively avoid turbulent generation, greatly reduces blast furnace gas in heat exchanger tube
The resistance of operation.
Brief description of the drawings
Fig. 1 is the structure diagram of the heat exchange pipe mechanism in the blast furnace gas heat exchange device.
Fig. 2 is attachment structure schematic diagram of the heat exchanger tube with introducing pipe.
Fig. 3 is the attachment structure schematic diagram of heat exchanger tube and fairlead.
Embodiment
The utility model is described in further detail with preferred embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the heat exchange pipe mechanism in blast furnace gas heat exchange device, including：Heat-exchanging tube bundle, the heat-exchanging tube bundle bag
Include arranged in parallel two groups --- first group of heat-exchanging tube bundle 1 and second group of heat-exchanging tube bundle 2, first group of heat-exchanging tube bundle and second
The group U-shaped arrangement of heat-exchanging tube bundle.The both ends of first group of heat-exchanging tube bundle 1 are that the first gas inlet end 11 and the first coal gas go out respectively
Mouthful end 12, the both ends of second group of heat-exchanging tube bundle 2 are the second gas inlet end 21 and the second gas exit end 22 respectively, the first coal gas
The port of export 12 is connected by turning flue 3 with the second gas inlet end 21.Blast furnace gas running orbit is U-shaped, specifically
It is as follows：Blast furnace gas is entered in first group of heat-exchanging tube bundle 1 by the first gas inlet end 11, then from the first gas exit end 12 into
Enter into turning flue 3, the blast furnace gas in turning flue 3 enters to second group of heat-exchanging tube bundle 2 from the second gas inlet end 21
In, discharged again from the second gas exit end 21 afterwards.The U-shaped arrangement of heat-exchanging tube bundle, this is compact-sized, and required space is small,
And the heated length of blast furnace gas is increased significantly, blast furnace gas is sufficiently heated to required temperature in U-shaped operational process
Degree, heating effect greatly improves, so as to carry out abundant guarantee for the power generation by waste combustion in later stage.
In the present embodiment, on the mouth of pipe of the every heat exchanger tube 4 at the first gas inlet end 11 and the second gas inlet end 21
It is mounted on introducing pipe 5.The mouth of pipe at every 4 both ends of heat exchanger tube welds after stretching out the outer 10~12mm of tube sheet 7 with introducing pipe 5.Often
It is a introduce pipe 5 by it is outer and in port be respectively outer intake 51 and interior intake 52, the internal diameter of introducing pipe 5 is by outer intake 51
Mouth 52 is directed inwardly into be gradually reduced up to consistent with the outside diameter of 4 mouth of pipe of heat exchanger tube, between outer intake 51 and interior intake 52
Tube wall be in introduce the projecting inward cambered surface 53 so as to guide from outside to inside of pipe 5.The mouth of each outer intake 51 for introducing pipe 5
Footpath is 1.5~2 times of interior 52 bore of intake.First gas inlet end 11 and the heat exchanger tube 4 at the second gas inlet end 21
The mouth of pipe be respectively mounted introduce pipe 5, it can play blast furnace gas good guiding function, greatly reduce blast furnace gas enter heat exchange
Resistance in pipe 4, so as to effectively reduce generation turbulent in heat exchanger tube 4.In addition, it is worth noting that each introduce pipe 5 also
The weld bond of heat exchanger tube 4 and tube sheet 7 can be highly desirable avoided to be subject to washing away for the blast furnace gas with dust particles, so that significantly
Improve the security of blast furnace gas heat exchange device operation.
In the present embodiment, on the mouth of pipe of the every heat exchanger tube 4 at the first gas exit end 12 and the second gas exit end 22
Be mounted on the fairlead 6 of cone cylinder shape shape, the mouth of pipe at every 4 both ends of heat exchanger tube stretch out after the outer 10~12mm of tube sheet 7 with extraction
Pipe 6 connects.Fairlead 6 is respectively that interior outlet 61 and outer outlet 62, the internal diameter of fairlead 6 are drawn by interior by inner and outer port
Export 61 outside outlets 62 gradually to increase, the interior outlet 61 of fairlead 6 is identical with the outside diameter of 4 mouth of pipe of heat exchanger tube.Each draw
The bore of the outer outlet 62 of outlet pipe 6 is 1.5~2 times of interior 61 bore of outlet.First gas exit end 12 and second
The mouth of pipe of the every heat exchanger tube 4 at gas exit end 22 is respectively provided with fairlead 6, which greatly enhances blast furnace gas from heat exchanger tube 4
Smooth degree during discharge, so as to effectively avoid turbulent generation, greatly reduces the resistance that blast furnace gas is run in heat exchanger tube 4.Often
4 both ends of root heat exchanger tube are mounted with introducing pipe 5 and fairlead 6 respectively, this is with regard to that can greatly reduce fortune of the blast furnace gas in heat exchanger tube 4
Row resistance, effectively avoids turbulent generation.
Claims (6)
1. the heat exchange pipe mechanism in blast furnace gas heat exchange device, including：Heat-exchanging tube bundle, it is characterised in that：The heat-exchanging tube bundle bag
Include arranged in parallel two groups --- first group of heat-exchanging tube bundle and second group of heat-exchanging tube bundle, first group of heat-exchanging tube bundle and second group
The U-shaped arrangement of heat-exchanging tube bundle, the both ends of first group of heat-exchanging tube bundle are the first gas inlet end and the first gas exit end respectively,
The both ends of second group of heat-exchanging tube bundle are the second gas inlet end and the second gas exit end respectively, and the first gas exit end is by turning
Curved flue is connected with the second gas inlet end, and blast furnace gas enters first group of heat-exchanging tube bundle by the first gas inlet end, then
Entered to from the first gas exit end in turning flue, the blast furnace gas in turning flue enters to from the second gas inlet end
In two groups of heat-exchanging tube bundles, discharged again from the second gas exit end afterwards.
2. the heat exchange pipe mechanism in blast furnace gas heat exchange device according to claim 1, it is characterised in that：First gas inlet
Be mounted on introducing pipe on the mouth of pipe of the every heat exchanger tube at end and the second gas inlet end, it is each introduce pipe by it is outer and in end
Mouthful be respectively outer intake and interior intake, each internal diameter for introducing pipe by outer intake be directed inwardly into mouth be gradually reduced up to
The outside diameter of the heat exchanger tube mouth of pipe is consistent, and the tube wall between outer intake and interior intake is in projecting inward so as to by outer to pipe is introduced
The cambered surface guided inwards.
3. the heat exchange pipe mechanism in blast furnace gas heat exchange device according to claim 1 or 2, it is characterised in that：First coal gas
The fairlead of cone cylinder shape shape is mounted on the mouth of pipe of the port of export and the every heat exchanger tube at the second gas exit end, it is each to draw
Guan Youli and outer port are respectively that interior outlet and outer outlet, the internal diameter of each fairlead are outwards drawn by interior outlet
Gradually increase, the interior outlet of fairlead are identical with the outside diameter of the heat exchanger tube mouth of pipe for mouth.
4. the heat exchange pipe mechanism in blast furnace gas heat exchange device according to claim 2, it is characterised in that：Each introducing pipe
The bore of outer intake is 1.5~2 times of interior intake bore.
5. the heat exchange pipe mechanism in blast furnace gas heat exchange device according to claim 3, it is characterised in that：Each fairlead
The bore of outer outlet is 1.5~2 times of interior outlet bore.
6. the heat exchange pipe mechanism in blast furnace gas heat exchange device according to claim 2, it is characterised in that：Every group of heat-exchanging tube bundle
The mouth of pipe at every heat exchanger tube both ends stretch out after the outer 10~12mm of tube sheet with fairlead or introducing pipe welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721280258.7U CN207317579U (en) | 2017-09-30 | 2017-09-30 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721280258.7U CN207317579U (en) | 2017-09-30 | 2017-09-30 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
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| Publication Number | Publication Date |
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| CN207317579U true CN207317579U (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721280258.7U Active CN207317579U (en) | 2017-09-30 | 2017-09-30 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643007A (en) * | 2017-09-30 | 2018-01-30 | 苏州海陆重工股份有限公司 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
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2017
- 2017-09-30 CN CN201721280258.7U patent/CN207317579U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643007A (en) * | 2017-09-30 | 2018-01-30 | 苏州海陆重工股份有限公司 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
| CN107643007B (en) * | 2017-09-30 | 2024-02-23 | 苏州海陆重工股份有限公司 | Heat exchange tube mechanism in blast furnace gas heat exchanger |
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